well, that could still be considered an issue, since kdf still don't have a similar ship
The KDF don't have similar ships to:
Intrepid-R, Nebula-R, Advanced Escort, Multi-Vector Advanced Escort, D'kyr (Technically similar to the Vor'quv, but not exactly)
Meanwhile the Federation differences are:
Bird of Prey, Vor'quv, and Kar'fi
The new Enterprise-F will more then likely increase the current Gap by yet another ship. Unless it's going to be a true Tier 6 ship, and not released until they up the Level cap, Which I could live with.